Steam-motor for operating tools in drilling-rigs.



No. 735,017. PATENTED JULY 18, 1905. P. S. BARKELEW. STEAM MOTOR FOROPERATING TOOLS IN DRILLING RIGS.

YAPPLIOATION FILED AUG. 3. 190a.

I "I"! lllllll HIIWI 1 c H g NITED STATES Patented July 18, 1905.

PATENT OFFICE.

FRANK S. BARKELEW, OF LOS ANGELES, CALIFORNIA, ASSIGNOR TO THECALIFORNIA STEAM'DRILLING RIG COMPANY. I

STEAM-MOTOR FOR OPERATING TOOLS IN DRILLING-RIGS.

SPECIFICATION forming part of Letters Patent No. 795,017, dated July 18,1905.

Application filed August 3, 1903. Serial No. 168,113.

To all whom, it may concern.-

Be it known that I, FRANK S. BARKELEW, a citizen of the United States,residing at Los Angeles, in the county of Los Angeles and State ofCalifornia, have invented new and useful Improvements in Steam-Motorsfor Operating Tools in Drilling-Rigs, of which the following is aspecification.

My invention relates more particularly to the means whereby thedrilling-bit is elevated in drilling wells; and the object of myinvention is to provide a motor for operating drilling-rigs in which thesteam is employed directly to elevate the drilling-tool. I accomplishthis object by means of the device described herein and shown in theaccompanying drawings, in which Figure 1 is aside elevation of mydrill-oper ating device. Fig. 2 is a central vertical longitudinalsection, and Fig. 3 is a transverse section taken on line 3 3 of Fig. 1.Fig. 4 is a fragment of the lower end of the pistonrod and the upper endof the temper-screw.

The device is secured to the drilling rig or derrick by the ropes Z,Fig. 1, secured to eye lets f on the deivce, the drilling-bit (notshown) being secured in the usual manner to the temper-screw L. When inthis condition, steam connection is made with the port S, whereby livesteam is fed into the primary cylinder A (having an opening in the topand bottom for the escape of steam) between the pistons a and c on thestem G, and the steam passes thence through the port I) under the pistonO on the piston-rod M into the cylinder B. This will cause the piston Oon the rod M to move up and carry with it the temper-screw L and theattached drillingbit. As the piston-rodM moves up it will carry with itthe lock-nuts e, which form the upper seat of the spiral spring (1, thelower end of the spring d resting on the sleeve J, loose on thepiston-rod M.

On the right-hand side and at the upper end of the cylinder B is ivotedthe lever K, as at 1'. To the free en of this lever is pivotally securedthe piston-rod G, upon which is mounted the pistons a and c. On theupper head of the cylinder B, as at t, the spiral spring H, surroundingthe plston-rod G, is secured. The lower end of this spring is secured tothe stem G, as at p. The tendency of this spring is to elevate thepiston-rod G. Below the point where the spring H is secured to the rod Gis keyed a sleeve F.

Mounted onthe side of the primary cylinder is rotatably secured thetrip-rod E. Coiled around the upper part thereof is the spring W, thetendency of which is to cause the horizontal portion E of the trip -rodto contact with the piston-rod G above the sleeve F and is normally heldin contact with the piston-rod G by this spring. The triprod is thrownout of engagement therewith as the piston C in the main cylinder movesup, carrying with it the cone-shaped sleeve D,

'adjustably mounted on the piston-rod M.

The upper cone-shaped portion D of the sleeve D engages with the roundedlower end of the trip-rod E. This will operate to throw the upperhorizontal portion of the trip-rod E away from the stem and off thecollar F,

which will permit the spring H to raise the piston-stem G, securedthereto.

When the piston G moves up after the admission of steam into thecylinder B, the locknuts e, forming the upper seat of the spring (1,will permit the sleeve J to move up. When the tension on the spring (1is removed, the spring I-I, acting on the piston-stem G, pivoted to thefree end of the lever K, will cause the free end of the lever to moveup, carrying with it the piston-rod G and the pistons a and c thereon.This spring will move the pistonstem G up until the shoulder G on thepistonstem contacts with the upper head of the primary cylinder, andthereby limit the upward stroke of the pistons a and 0. Thus it will beseen that when the shoulder G is in contact with the upper head of thecylinder the lower piston 0 will rest between the ports S and b andwhile in this position the steam will exhaust from the cylinder Bthrough the ports I and b. When in this position, the steam having beenremoved from below the piston O, the weight'of the tool and temper-screwsecured thereto will carry the piston down, and with it the piston inthe primary cylinder will assume the position shown in Fig. i 2, whensteam will again be fed into the cylinder B and again raise the pistonC, when the operation is repeated. The lock-nuts e on the piston-rod Mmay be adjusted as to height so as to regulate the time when steam isreadmitted into the cylinder B. In operating the rig the usual handles Vare rigidly afiixed to the piston M, and in rotating the handles thepiston C turns with it. The lower part of the piston-rod M isscrewthreaded for the reception of the temperscrew L. I have shown theusual set-screw T, by means of which the temper-screw and the piston-rodare rigidly secured together during the operation of drilling, the temerscrew being released when it is desire to drop the drilling-bitfarther down.

Having described my invention, 'what I claim as new, and desire tosecure by Letters Patent, is-

The herein-described means to operate the drilling-tool in adrilling-rig comprising the following elements in combination; thecylinders A and B the port 1) leading from one cylinder to the other,the pistonstem M having piston O thereon in the cylinder B, thepiston-stem G having pistons a and 0 thereon; and provided with fixedsleeve F there- ,on; the steam-inlet ort S communicating with thecylinder A, tiie spiral spring d on the piston-rod M mounted as shownand described; the s iral spring H mounted on the piston-stem as shownand described, the trip-rod E revolubly mounted on the frame, the springW, and the adjustable coneshaped sleeve D.

In witness that I claim the foregoing I have hereunto subscribed my namethis 23d day of July, 1903.

FRANK S. BARKELEW. Witnesses:

HENRY T. HAZARD, MARGARETE C. NIOKELESON.

